[jboss-user] [JBoss Microcontainer Development] - Wildcard support in Dynamic-imports

[Thomas Diesler]

Thomas Diesler [http://community.jboss.org/people/thomas.diesler%40jboss.com] replied to the discussion

"Wildcard support in Dynamic-imports"

To view the discussion, visit: http://community.jboss.org/message/543217#543217

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I fixed the module tracking issue

      // Add the modules that can resolve the requirement
      for (Module aux : domain.getModules(null, null))
      {
         // The wildcard policy should not load from this module
         if (aux == module)
            continue;
         
         // Add the module if it can resolve the requirement
         if (aux.canResolve(requirement))
            modules.add(aux);
      }


and the capability resolve issue. I now see

2010-05-15 08:31:19,327 WARN  [org.jboss.detailed.classloader.ClassLoaderManager] Unexpected error during load of:org.jboss.test.osgi.classloader.support.a.A
java.lang.IllegalStateException: No classloader for this module OSGiModule dynamic-wildcard-c:0.0.0
    at org.jboss.classloading.spi.dependency.Module.getResource(Module.java:587)
    at org.jboss.classloading.spi.dependency.policy.WildcardClassLoaderPolicy.findModule(WildcardClassLoaderPolicy.java:113)
    at org.jboss.classloading.spi.dependency.policy.WildcardClassLoaderPolicy.getBaseClassLoader(WildcardClassLoaderPolicy.java:289)
    at org.jboss.classloading.spi.dependency.policy.WildcardDelegateLoader.getBaseClassLoader(WildcardDelegateLoader.java:51)
    at org.jboss.classloader.spi.base.BaseDelegateLoader.getPackage(BaseDelegateLoader.java:160)
    at org.jboss.classloader.spi.filter.FilteredDelegateLoader.getPackage(FilteredDelegateLoader.java:173)
    at org.jboss.classloader.spi.base.BaseClassLoaderDomain.getPackageFromImports(BaseClassLoaderDomain.java:1014)
    at org.jboss.classloader.spi.base.BaseClassLoaderDomain.getPackage(BaseClassLoaderDomain.java:590)
    at org.jboss.classloader.spi.base.BaseClassLoaderDomain.getPackage(BaseClassLoaderDomain.java:1218)
    at org.jboss.classloader.spi.base.BaseClassLoader.getPackage(BaseClassLoader.java:262)
    at org.jboss.classloader.spi.base.BaseClassLoader.definePackage(BaseClassLoader.java:806)
    at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:645)
    at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:609)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:608)
    at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:585)
    at org.jboss.classloader.spi.base.BaseDelegateLoader.loadClass(BaseDelegateLoader.java:138)
    at org.jboss.classloader.spi.base.ClassLoadingTask$ThreadTask.run(ClassLoadingTask.java:461)
    at org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:262)
    at org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:161)
    at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:262)
    at org.jboss.osgi.framework.classloading.OSGiClassLoaderDomain.loadClass(OSGiClassLoaderDomain.java:55)
    at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1164)
    at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:883)
    at org.jboss.classloader.spi.base.BaseClassLoader.doLoadClass(BaseClassLoader.java:505)
    at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:450)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    at org.jboss.osgi.framework.bundle.OSGiBundleState.loadClass(OSGiBundleState.java:145)
    at org.jboss.osgi.framework.bundle.OSGiBundleWrapper.loadClass(OSGiBundleWrapper.java:171)
    at org.jboss.osgi.testing.OSGiTestHelper.assertLoadClass(OSGiTestHelper.java:278)
    at org.jboss.osgi.testing.OSGiTest.assertLoadClass(OSGiTest.java:213)
    at org.jboss.osgi.testing.OSGiFrameworkTest.assertLoadClass(OSGiFrameworkTest.java:193)
    at org.jboss.test.osgi.classloader.DynamicImportPackageTestCase.testAllPackagesWildcardNotWired(DynamicImportPackageTestCase.java:195)



This seems to be caused by an issue that the exporting bundle is not RESOLVED. The BaseClassLoaderDomain can find the resource, but when it comes to the actual load the module has no ClassLoader associated. In OSGi a call to Bundle.loadClass() triggers bundle resolution for the exporting module.

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